Lock.



W. H. &J.'G1 MUSSELIVIA N. LOCK.

APPLICATION FILED JULY 8, 1915.

Patented Dec. 21, 1915.

2 SHEETS-SHEET 1.

W. H. & J. G. MUSSELMAN. LOCK.

APPLICATION FILED JULY 8, 19:5.

Patented Dec. 21, 1915.

2 SHEETS-SHEET 2.

be done with a WILLIAM H. MUSSELMAN AND JOHN G. IVIUSSJELIVIAN, 0F CHILI, INDIANA.

LOCK.

Specification of Letters Patent.

Patented Dec.21,1915.

Application filed July 8, 1915. Serial No. 38,750.

To all whom it may concern.

Be it known that we, WILLIAM H. Mos- SELMAN and JOHN G. MUSSELMAN, citizens of the United States, residing at Chili, in the county of Miami and State of Indiana, have invented certain new and useful llmprovements in Locks, of which the following is a specification.

The invention has for an object to provide a lock construction suitable for doors of various kinds, but of very great value particularly for use in motor vehicles, for many reasons which will appear herein.

One important advantage of the device consists in the fact that it cannot be operated from the outside by insertion of a knife blade between the door and frame, as may great many locks of this character.

An important aim of the invention is to give a means whereby the lock may be operated and the door opened by one movement of the hand of an operator.

Another object of the invention isto provide a spring lock into which the bolt will be held retracted while the door is open, and will be automatically shot when the door is closed. 1. 7

Another important aim of the invention is to provide a strike having peculiar cooperative functions in connection with the lock, and which will assume full retraction of the bolt before a door may be opened.

It is a great advantage of the invention particularly in connection with motor vehicles that when the door is opened there are no projections thereon which would tend to damage fabrics of apparel of persons entering or leaving doorways.

very important advantage of the invention lies in the fact that in addition to all of its parts being secure against rattling, when a door is closed thereby, the door will be held against rattling without requiring accurate alinement of the bolt with the opening in the stop plate, andwithout requiring accurate location of the stop opening with relation to the jamb.

Another important consideration in the production of the invention is the provision of simple operating connections for the bolt.

Additional objects, advantages and features of invention will appear from the construction, arrangement, and combination of parts hereinafter set forth.

In the drawings forming a part of our application, Figure 1 is an elevation of the lock and stop plate showing the bolt shot, Fig. '2 is a front edge view of the lock, Fig. 3 1s a View similar to Fig. 1 showing the bolt drawn, Fig. 4 is a section on the line 44 of Fig. 3, Fig. 5 is a section on the line 55 of Fig. 1, Fig. 6 is a detail elevation of the latch bolt, Fig. 7 is a section on the line 77 of Fig. 6, Fig. 8 is a section on the line 8-8 of Fig. 6, Fig. 9 is a section on the line 9-9 of Fig. 1, Fig. 10 is a fragmentary elevation of the lock as in Fig. 1, illustrating a modification in certain details.

There is illustrated a portion of a door 10 which may be of any customary construction, and a jamb 11 which may comprise a portion of any ordinary framing for the door.

In its present embodiment the invention is shown as a latch, to be operated without the use of a key, but it is evident that look makers will readily understand its adaptaplate, a rectangular opening 17 being formed adjacent the upper end of the shaft, the shaft extending across this opening and having securedthereto an operating plate or push-button 18 suitably stiffened on the inner side and connected to the shaft so as to lie flush with the plate 12 at its innermost position, or it may lie slightly outward of this plate and parallel thereto, if desired, when in the position mentioned. At its outermost end the plate is formed with a lateral inward extension 19 concentric to the shaft 14:, and the space between the plate and extension may be closed by a top piece 20. At its lower end the shaft 14 is provided with a radial arm 21 extending in wardly. The shaft 14 is located at the far side ofthe vertical part of the plate 12 from its horizontal portion. The outer end of the horizontal part of the plate 12 is turned inwardly at right angles to the major plane of the plate and formed with a rectangular bolt opening 22 spaced slightly from the adjacent inner portion of the plate, through which opening there is slidably engaged the outer end of a bolt 23, having at its inner end a reduced stem 24 engaged slidably through an ear 25 formed upon a plate 26 attached to the plate 12 and having a second ear 27 thereon projecting across the path of the stem 24 at a proper distance to limit inward movement of the bolt. Engaged around the stem and confined between the bolt proper and the car 25, there is a helical spring 28, by which the bolt is shot. The bolt is normally held against being shot when fully retracted by a spring pressed detent 29 mounted in a suitable recess in the side of the bolt next the plate 12, and tend- 5 ing to engage the intervening portion 30 of the plate 12 immediately inward of the opening 22, which intervening portion may be termed a stop. A suitable opening is formed in the plate 12 immediately inward of. the stop 30 through which there is slidably engaged a plunger'31, carried by a bow spring 32 by which it is held normally retracted when the device is in unlocked position. The plunger is secured to the intermediate part of the spring which has its ends bearing upon the plate 12, one end being attached thereto. The spring extends vertically, and is in position to engage and be compressed by the jamb when the door is closed, whereby the vdetent -is disengaged from the stop and the bolt released and shot.

It is to benoted that the bolt has an inclination toward the plate 12 at its inner part,

, and that the direction of movement of the 85 bolt is outwardly divergent from the major planeof the plate 12. I

A link 33 is pivoted upon the outer side i of the bolt, extending inwardly and engaged slidably through a slot in the 'ear 25 outwardly of the stem 24, the slot being sufficiently elongated to permit vertical oscilla--\ tion of the link as desired. The link is formed with a series of teeth 34 on its lower side arranged to engage the lower end of the slot when the bolt is shot, whereby return of the bolt is prevented except when properly operated. A leaf spring 35 may be provided on the upper side of the check, bearing against the upper end of the slot in the ear 25 to lightly bear the check downwardly and prevent its rattling or casual disengagement. A link 36 is pivotally con-- nected to the check just below the point of its pivotal attachment to the bolt, and engaged with the arm 21 on the shaft 14. The pull by the link required to overcome the force of the spring 28 will'first cause the check- 33 to be raiseddisengaging its teeth from the lower end of the slot. The movement of the bolt permitted by the 27 is sufiicient for the outer end of the bolt to lie flush with the outer surface of the plate 12 around the opening 22, or immediately inwardthereof.

.05.. A stop plate 37 is provided for attach- 'ment to adoor frame having a lateral outward extension 38 at its inner part to lie over the jamb of the door frame and engage the spring and plunger 32 and 31. The stop is provided with a suitable bolt opening 39 at a distance from the extension 38 to receive the bolt when the spring 32 has been fully compressed by engagement with the extension 38.- A block 40 is carried by the plate 37 on the inner side having an inner planiform side alined with the outer side of the opening 39. The block is formed with a recess 41 at its outer side intermediately of the height of the opening 39, in which there is pivoted a dog 41 of peculiar form. 8 It is provided with two arms, 42 and 43 re spectively, the first adapted to lie in a cut away portion 44 of the plate 37 immediately adjacent the opening 39, at times, but held yieldably out of such position by a leaf spring 45 confined between the block and the arm. The arm 43 is disposed at the inner side of the dog and at the proper angle with respect to thefirst arm to engage against the block and check outward movement of the first arm at the proper point, as will be made clear. The function of this dog is to engage the edge of the door or the plate 12 outwardly of the opening 22, and prevent opening of the door until the bolt has been fully retracted so as to be held by the detent 29. The dog will accommodate itself to various spacing between the door and frame, obviating the necessity for nice fiting, or periodical expense for refitting when the play between the door and frame is increased or decreased as may be expectedunder ordinary developments.

In use, the parts being assembled as described on a door and frame, the door being closed, it is only necessary to press outwardly against the push button 18, when the shaft 14 will be rotated, lifting the check 33 and drawin the bolt. As soon as the bolt clears the p ate 37, the same pressure continued will cause opening movement of the door. The door can not open, however unless the bolt has been fully drawn, for en-- gagement of the detent 29, as the dog 41 will engage the outer side of the bolt until it is fully drawn into the plate portion 12, even though the end of the bolt is clear of the stop plate. The construction of the lock is such that the bolt may be easily located intermediately of the height of the door,

while the push button 18 may be disposed close to the upper edge of the door in motor vehicles, which is especially desirable in touring bodies. A plurality of bolts may also be operated at different heights by simply extending the shaft 14 for the necessary distance and duplicating the bolt construction and connections previously dcscribed.

The device is adaptable to use in various magma shot position there is formed an opening 48 in the plate 12 to receive the pin of a key, the bit 49 of which, shown, is providedwith a face having a radius suflicient to engage and lift the check before striking the inner,

hook-like end 50 of the notch by which the bolt is drawn. Wards 51 may be mounted in the plate 12.

It is apparent that various other embodiments of the invention are possible, and we do not regard the scope thereof as limited to the specific details shown.

The parts are simple and not liable to derangement readily, and the article may be produced at a low manufacturing cost.

What is claimed:

1. A device of the class described comprising a stop, a lock device including a support, a reciprocating bolt carried thereby, a check device pivoted on the bolt having teeth thereon means to engage the teeth at one limit of oscillatory movement of the check, and means to operate the bolt associated with the check in position to engage therewith eccentrically of its pivot whereby the check will be moved out of engagement with said means to engage the teeth.

2. A device of the class described comprising a stop, a lock device including-a support, a sliding bolt thereon for engagement with the stop, a check member pivoted therein for oscillation in a given plane, means yieldingly tending to move the check in one direction, stop means in the path of the direct movement of the check with the bolt, a revoluble slfaft, a link having eccentric contion, said nection therewith and being connected to the check member eccentrically to its pivot in a direction from'the pivot to move the check initially indirectly with respect to the direction of movement of the bolt, the direction of the movement of the first named eccentricconnection being in the main coin-- cident with the path of the bolt and of an extent to cause sliding movement thereof through action of the link and check when continued. v

3. In a lock of the class described a supporting plate, having an opening therein, a shaft mounted revolubly on the plate and extending across one side of the opening, an

operatingplate carried by the shaft shaped and positioned to lie in said opening and 1 having an inward rounded extension concentric with the shaft, a sliding bolt mounted on the plate, resilient means to shoot the bolt, and eccentric connections between the shaft and bolt disposed for drawing of the bolt under inward movement of the operat ing plate. a

4C. In a device of the class described, a lock device including a support, a reciprocating bolt carried thereby, a guide receiving slidably the inner part of the bolt, a spring seated against the guide and engaged with the bolt tending to shoot it, a check having inwardly inclined serrations at its edge pivoted on the bolt for vertical oscillaguide being slotted and having said check oscillably and slidably engaged therethrough, a link connected to the check and means to operate the link to draw the bolt, operative in a direction to lift the check initially.

In testimony whereof we have affixed our signatures in presence of two witnesses.

WILLIAM H. MUSSELMAN. JOHN G. MUSSELMAN.

\Vitnesses D. E. RHODES, 'IIvoLA Won. 

